Bsc. I.T.

Digital Electronics Syllabus

I Number System: Analog System, digital system, numbering system, binary numbersystem, octal number system, hexadecimal number system, conversion from one number system to another, floating point numbers, weighted codes binary coded decimal, non-weighted codes Excess – 3 code, Gray code, Alphanumeric codes – ASCII Code, EBCDIC, ISCII Code, Hollerith Code, Morse Code, Teletypewriter (TTY), Error detection and correction, Universal Product Code, Code conversion.

Binary Arithmetic: Binary addition, Binary subtraction, Negative number representation, Subtraction using 1’s complement and 2’s complement, Binary multiplication and division, Arithmetic in octal number system, Arithmetic in hexadecimal number system, BCD and Excess – 3 arithmetic.
II Boolean Algebra and Logic Gates: Introduction, Logic (AND OR NOT), Boolean theorems, Boolean Laws, De Morgan’s Theorem, Perfect Induction, Reduction of Logic expression using Boolean Algebra, Deriving Boolean expression from given circuit, exclusive OR and Exclusive NOR gates, Universal Logic gates, Implementation of other gates using universal gates, Input bubbled logic, Assertion level.

Minterm, Maxterm and Karnaugh Maps: Introduction, minterms and sum of minterm form, maxterm and Product of maxterm form, Reduction technique using Karnaugh maps – 2/3/4/5/6 variable K-maps, Grouping of variables in K-maps, K-maps for product of sum form, minimize Boolean expression using K-map and obtain K-map from Boolean expression, Quine Mc Cluskey Method.
III Combinational Logic Circuits: Introduction, Multi-input, multi-output Combinational circuits, Code converters design and implementations

Arithmetic Circuits: Introduction, Adder, BCD Adder, Excess – 3 Adder, Binary Subtractors, BCD Subtractor, Multiplier, Comparator.
IV Multiplexer, Demultiplexer, ALU, Encoder and Decoder: Introduction, Multiplexer, Demultiplexer, Decoder, ALU, Encoders.

Sequential Circuits: Flip-Flop: Introduction, Terminologies used, S-R flip-flop, D flip-fop, JK flip-flop, Race-around condition, Master – slave JK flip-flop, T flip-flop, 12 14 | P a g e conversion from one type of flip-flop to another, Application of flip-flops.
V Counters: Introduction, Asynchronous counter, Terms related to counters, IC7493 (4-bit binary counter), Synchronous counter, Bushing, Type TDesign, Type JK Design, Presettable counter, IC 7490, IC 7492,Synchronous counter ICs, Analysis of counter circuits.

Shift Register: Introduction, parallel and shift registers, serial shifting, serial–in serial–out, serial–in parallel–out , parallel–in parallel–out, Ring counter, Johnson counter, Applications of shift registers, Pseudo-random binary sequence generator, IC7495, Seven Segment displays, analysis of shift counters.

Digital Electronics Practicals

Practical NoDetails
1 Study of Logic gates and their ICs and universal gates:
a Study of AND, OR, NOT, XOR, XNOR, NAND and NOR gates
b IC 7400, 7402, 7404, 7408, 7432, 7486, 74266
c Implement AND, OR, NOT, XOR, XNOR using NAND gates.
d Implement AND, OR, NOT, XOR, XNOR using NOR gates.
2 Implement the given Boolean expressions using minimum number of gates.
a Verifying De Morgan’s laws.
b Implement other given expressions using minimum number of gates.
c Implement other given expressions using minimum number of ICs.
3 Implement combinational circuits.
a Design and implement combinational circuit based on the problem given and minimizing using K-maps.
4 Implement code converters.
a Design and implement Binary – to – Gray code converter.
b Design and implement Gray – to – Binary code converter.
c Design and implement Binary – to – BCD code converter
d Design and implement Binary – to – XS-3 code converter
5 Implement Adder and Subtractor Arithmetic circuits.
a Design and implement Half adder and Full adder.
b Design and implement BCD adder.
c Design and implement XS – 3 adder.
d Design and implement binary subtractor.
e Design and implement BCD subtractor.
f Design and implement XS – 3 subtractor.
6 Implement Arithmetic circuits.
a Design and implement a 2-bit by 2-bit multiplier.
b Design and implement a 2-bit comparator.
7 Implement Encode and Decoder and Multiplexer and Demultiplexers.
a Design and implement 8:3 encoder.
b Design and implement 3:8 decoder.
c Design and implement 4:1 multiplexer. Study of IC 74153, 74157
d Design and implement 1:4 demultiplexer. Study of IC 74139
e Implement the given expression using IC 74151 8:1 multiplexer.
f Implement the given expression using IC 74138 3:8 decoder.
8 Study of flip-flops and counters.
a Study of IC 7473.
b Study of IC 7474.
c Study of IC 7476.
d Conversion of Flip-flops.
e Design of 3-bit synchronous counter using 7473 and required gates.
f Design of 3-bit ripple counter using IC 7473.
9 Study of counter ICs and designing Mod-N counters.
a Study of IC 7490, 7492, 7493 and designing mod-n counters using these.
b Designing mod-n counters using IC 7473 and 7400 (NAND gates)
10 Design of shift registers and shift register counters.
a Design serial – in serial – out, serial – in parallel – out, parallel – in serial – out,parallel – in parallel – out and bidirectional shift registers using IC 7474.
b Study of ID 7495.
c Implementation of digits using seven segment displays.

Digital Electronics Reference Books

Title Digital Electronics and Logic Design
Authors N. G. Palan
Publisher Technova
Year 2014
Download Here
Title Make Electronics
Authors Charles Platt
Publisher O’Reilly
Edition 1st
Year 2010
Download Here
Title Modern Digital Electronics
Authors R. P. Jain
Publisher Tata McGraw Hill
Edition 3rd
Download Here
Title Digital Principles and Applications
Authors Malvino and Leach
Publisher Tata McGraw Hill
Download Here (Newer Edition)
Title Digital Electronics:Principles, Devices and Applications,
Authors Anil K. Maini
Publisher Wiely
Year 2007
Download Here